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https://github.com/isc-projects/bind9.git
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f3753d591f
As this code is on hot path (NSEC3) this introduces an additional optimization of the EVP_MD API - instead of calling EVP_MD_CTX_new() on every call to isc_iterated_hash(), we create two thread_local objects for each thread - a basectx and mdctx, initialize basectx once and then use EVP_MD_CTX_copy_ex() to flip the initialized state into mdctx. This saves us couple more valuable microseconds from the isc_iterated_hash() call.
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <isc/bind9.h>
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#include <isc/iterated_hash.h>
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#include <isc/md.h>
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#include <isc/mem.h>
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#include <isc/os.h>
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#include <isc/tls.h>
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#include <isc/util.h>
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#include <isc/uv.h>
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#include <isc/xml.h>
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#include "config.h"
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#include "mem_p.h"
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#include "mutex_p.h"
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#include "os_p.h"
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#include "trampoline_p.h"
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#ifndef ISC_CONSTRUCTOR
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#error Either __attribute__((constructor|destructor))__ or DllMain support needed to compile BIND 9.
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#endif
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/***
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*** Functions
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***/
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void
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isc__initialize(void) ISC_CONSTRUCTOR;
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void
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isc__shutdown(void) ISC_DESTRUCTOR;
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void
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isc__initialize(void) {
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isc__os_initialize();
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isc__mutex_initialize();
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isc__mem_initialize();
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isc__tls_initialize();
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isc__trampoline_initialize();
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isc__uv_initialize();
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isc__xml_initialize();
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isc__md_initialize();
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isc__iterated_hash_initialize();
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(void)isc_os_ncpus();
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}
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void
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isc__shutdown(void) {
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isc__iterated_hash_shutdown();
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isc__md_shutdown();
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isc__xml_shutdown();
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isc__uv_shutdown();
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isc__trampoline_shutdown();
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isc__tls_shutdown();
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isc__mem_shutdown();
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isc__mutex_shutdown();
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isc__os_shutdown();
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}
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